Final Round of Voting Scheduled for Dec. 29

ATHENS—Greek Prime Minister Antonis Samaras’s candidate for the presidency failed to win enough support in a second round parliamentary vote Tuesday, despite managing to gather eight more votes than in the first round, increasing the likelihood of snap elections being held early next year.

Greece’s parliament couldn’t gather the two-thirds needed to elect former European Commissioner Stavros Dimas as the country’s next president, meaning that lawmakers now face a third and final vote on Monday.